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1. Electrical charge is measured in ...

  • A. amps
  • B. volts
  • C. ohms
  • D. coulombs

2. The formula to calculate charge is ...

  • A. charge = current x time
  • B. charge = current ÷ time
  • C. charge = current ÷ voltage
  • D. charge = voltage x current

3. When a charge flows along a wire in a circuit, the particles moving round are ..

  • A. electrons
  • B. protons
  • C. neutrons
  • D. atoms

What are the missing values in this table showing the charge flowing in a circuit?

  Charge Current Time
4. 20 A 5 s
5. 5 C 10 A
6. 400 C 4000 s
7. 200 mA 60 s


 
8. Power cables can carry high currents. power cables at sunset

What charge flows through a power cable if 30 amps flows through it in 10 seconds?

  • A. 3000 C
  • B. 300 C
  • C. 3 C
  • D. 0.33 C

9. A kettle needs a total charge of 1200 C to boil, in a time of 2 minutes. The current flowing in this time was:

  • A. 1 A
  • B. 10 A
  • C. 600 A
  • D. 144 kA
10. This circuit was switched on for a short time and 0.4 C of charge flowed. How long was it on for?
  • A. 200 seconds
  • B. 0.2 seconds
  • C. 0.8 seconds
  • D. 0.004 seconds
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A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 1:

Electrical charge is measured in coulombs.

So the correct answer is D.


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

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A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 2:

The relationship between charge (Q), current (I), and time (t) is:

Q=I×t

where:

So the correct formula is A.


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 3:

In a typical electrical circuit with a metal wire, the moving charges that flow to create an electric current are electrons.

Protons and neutrons are bound in the nucleus of atoms and do not move freely in a wire. Atoms as a whole do not move along the wire.

So the correct answer is A.


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 4:

Current = 20 A, Time = 5 s

Charge=I x t = 20×5=100 C

→ Missing value = 100 C


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 5:

Charge = 5 C, Current = 10 A

Time=Charge/Current=5/10=0.5 s

→ Missing value = 0.5 s


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 6:

Charge(Q) = 400 C, Time (t) = 4000 s

Current=Q/t = 400/4000=0.1 A

→ Missing value = 0.1 A


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 7:

Current = 200 mA = 200×10−3 A=0.2 A
Time = 60 s

Charge=0.2×60=12 C

→ Missing value = 12 C


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 8:

We use the formula:

Charge (C)=Current (A)×Time (s)

Given:
Current = 30 A, Time = 10 s

Charge=30×10=300 C

So the correct answer is B.


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 9:

We use:

Current (A)=Charge (C)/Time (s)

Charge = 1200 C
Time = 2 minutes = 2×60=120 s

I=1200/120=10 A

So the correct answer is B


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

close cross
A.I. response
Our use of A.I. is environmentally friendly!
We do an A.I. search for each question, then store the response to that question on our server. No need to do multiple searches! Repeating the same A.I. request would have a much bigger carbon footprint.

Question 10:

We can find the time using the formula:

Time=Charge/Current

Given:
Charge Q=0.4 C
Current I=2 mA=2×10−3 A=0.002 A

t=0.4/0.002=200 s

The voltage (2 V) is extra information not needed for this calculation.

So the correct answer is A.


*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.