IGCSE Physics (0625) – Unit 4. Electricity and magnetism-4.2.4 Potential difference- Paper 2

Question

The diagram shows two voltmeters P and Q connected to a potential divider.

                       

The sliding connection at point X is moved towards the top of the diagram.

What happens to the reading on P and to the reading on Q?

 

reading on P

reading on Q

A

decreases

decreases

B

decreases

increases

C

increases

decreases

D

increases

increases

Answer/Explanation

Ans: B

Question

In which unit is potential difference measured?

A. ampere

B. ohm

C. volt

D. watt

Answer/Explanation

Ans: C

Question

The diagram shows an electrical circuit.

             

Between which two points must a voltmeter be connected to find the potential difference across

the bell?

A L and M

B M and N

C N and O

D O and P

Answer/Explanation

Ans: D

Question

The diagram shows a 10 Ω resistor and a 20 Ω resistor connected in a potential divider circuit.

                           

What is the reading on the voltmeter? 4.2.4

A 4.0 V

B 6.0 V

C 8.0 V

D 12.0 V

Answer/Explanation

Ans: C

 

Question

The diagram shows a 10 Ω resistor and a 20 Ω resistor connected in a potential divider circuit.

                           

What is the reading on the voltmeter? 4.2.4

A 4.0 V

B 6.0 V

C 8.0 V

D 12.0 V

Answer/Explanation

Ans: C

 

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