Current Electricity

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Question

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Question 1 :

The breakdown voltage for paper capacitors is usually

1. 20 to 60 volts
2. 200 to 1600 volts
3. 2000 to 3000 volts
4. more than 10000 volts
Answer
4625

Question 2 :

Electric field intensity is a quantity

1. scalar
2. vector
3. both (a) and (b)
4. none of the above
Answer
4626

Question 3 :

The electric field at a point situated at a distance d from straight charged conductor is

1. proportional to d
2. inversely proportional to d
3. directly proportional to d
4. none of the above
Answer
4627

Question 4 :

The sparking between two electrical contacts can be reduced by inserting a

1. capacitor in parallel with contacts
2. capacitor in series with each contact
3. resistance in line
4. none of the above
Answer
4628

Question 5 :

While testing a capacitor with ohm-metre, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is

1. short-circuited
2. open circuited
3. alright
4. leaky
Answer
4629