An ammeter and a voltmeter are joined in series to a cell. Their readings are A and V respectively. A resistance is now joined in parallel with the voltmeter. Then,

 

1.  Both A and V will increase

2.  Both A and V will decrease

3.  A will decrease, V will increase

4.  A will increase, V will decrease

 

Three identical capacitors A, B and C are charged to the same potential and then made to discharge through three resistance . Their potential differences (V) are plotted against time t, giving the curves 1, 2 and 3. Choose the incorrect option. 

1. 

2. 

3. 

4. None of the above. 

The logic circuit as shown below has the input waveforms A and B as shown. Pick out the correct output waveform. 

1.  

2.  

3.  

4.  

Direction: In each of the following questions, a Statement of assertion is given followed by a corresponding Statement of reason.

Assertion (A) Linear momentum of a body changes even when it is moving uniformly in a circle. 
Reason (R) In uniform circular motion velocity remains constant.

1. Both assertion and reason are true and reason is the correct explanation of assertion.

2. Both assertion and reason are true but reason is not the correct explanation of assertion.

3. Assertion is true but reason is false.

4. Both assertion and reason are false.

Direction: In each of the following questions, a Statement of assertion is given followed by a corresponding Statement of reason.

Assertion (A) Conductors having equal positive charge and volume, must also have same potential. 

Reason (R) Potential depends only on charge and volume of conductor.

1.  Both assertion and reason are true and reason is the correct explanation of assertion

2.  Both assertion and reason are true but reason is not the correct explanation of assertion

3.  Assertion is true but reason is false

4.  Both assertion and reason are false