1.The diagrams show four arrangements of resistors.Which arrangement has the smallest total resistance?

1A

 
 
 
 

2.The potential divider shown is connected across a constant 12 V supply.

2A

When R has a value of 20 ƒ¶, the voltmeter readings are equal. How do these readings change when the value of R is reduced to 10 ƒ¶?

2AA

 
 
 
 

3.A circuit contains two resistors connected in parallel with a battery.

3

 

 

 

 

 

Which of the following statements about the currents at P, Q and R is true?

 
 
 
 

4.The diagram shows a circuit containing two ammeters and three resistors.

4

Which of the ammeters will show the current in resistor R2?

 
 
 
 

5.Which copper wire would have the smallest resistance?

 
 
 
 

6.The reading on the ammeter in the circuit is 1.0 A. A second ammeter is connected in the circuit. It also reads 1.0 A. At which labelled point is it connected?

5

 
 
 
 

7.The diagram shows an electric circuit containing three meters, X, Y and Z, all connected correctly

7

What are meters X, Y and Z?

77

 
 
 
 

8.. The diagram shows a potential divider circuit with two identical lamps L1and L2.

8

The contact K is halfway between X and Y and the lamps are equally bright. What will happen to the brightness of the lamps when contact K is moved a short distance towards X?

88

 
 
 
 

9.The diagrams show four arrangements of resistors. Which arrangement has the LARGEST total resistance?

9

 
 
 
 

10. A resistor in a circuit has a value of resistance of 3.0Ω. In 20 s, a charge of 10 C passes through the resistor. What is the potential difference across the resistor?

 
 
 
 

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