# CBES Board Class 12/CBES Board(Class 12-Physics)MCQ Questions with Answers(Chapter 3 Current Electricity) Sample Test,Sample questions

## Question: `A charge is moving across a junction, then`

1. momentum will be conserved.

2.momentum will not be conserved.

3.at some places momenturii will be conserved and at some other places momentum will not be conserved.

4.none of these.

## Question: `An electric heater is connected to the voltage supply. After few seconds, current gets its steady value then its initial current will be`

2.slightly higher than its steady current

3.slightly less than its steady current

4. zero

## Question: ` In the series combination of two or more than two resistances`

1.the current through each resistance is same.

2.the voltage through each resistance is same.

3.neither current nor voltage through each re-sistance is same.

4.both current and voltage through each resis¬tance are same.

1.12.5 Q

2.13.5 Q

3.14.5 Q

4.16.5 Q

## Question: `In a potentiometer of 10 wires, the balance point is obtained on the 7th wire. To shift the balance point to 9th wire, we should`

1. decrease resistance in the main circuit.

2. increase resistance in the main circuit.

3.decrease resistance in series with the cell whose emf is to be measured.

4. increase resistance in series with the cell whose emf is to be determined.

## Question: `In a Wheatstone bridge if the battery and galvanometer are interchanged then the deflection in galvanometer will`

1.change in previous direction

2.not change

3. change in opposite direction

4.none of these.

1. more voltage

2.more current

3. less voltage

4.less current

## Question: `The resistivity of alloy manganin is`

1.Nearly independent of temperature

2.Increases rapidly with increase in temperature

3.Decreases with increase in temperature

4. Increases rapidly with decrease in temperature

## Question: `When a metal conductor connected to left gap of a meter bridge is heated, the balancing point`

1.shifts towards right

2. shifts towards left

3.remains unchanged

4.remains at zero

## More MCQS

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