Electrical circuits

Question 1

Voltage

Answer 1

Energy transferred per unit charge

Question 2

J

Answer 2

V*C

Question 3

E

Answer 3

Q*V

Question 4

V

Answer 4

I*R

Question 5

P

Answer 5

I*V

Question 6

E

Answer 6

IVt

Question 7

In series

Answer 7

Current remains the same and voltage gets used up by the components

Question 8

In parallel

Answer 8

Current splits at junctions and voltage remains the same

Question 9

For fixed resistors

Answer 9

• y=mx+c
• I=V/R=1/R*V
• m=1/R

Question 10

How to find the I-V graph for a component

Answer 10

• Circuit diagram
• Set-up the circuit diagram with the voltmeter in parallel across the component and the ammeter in series
• Use the variable resistor to change the total resistance
• Measure Voltage and Current
• Repeat and average
• Plot average current against average voltage