Question

Two resistors of resistances 5 ohm &20 ohm are connected in parallel and a 50V is applied to the arrangement.

Then
1. The current through both the resistors are equal.
2. The same voltage will be available across each resistor. 3. More heat will be released in 5 ohm resistor.
4. More heat will be released in 20 ohm resistor.



Which above statements are correct??


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Answer 1

Let us evaluate every option:

1. The current through both the resistors are equal.

False, as the current is not equal in parallel, until resistors have same resistances.

2. The same voltage will be available across each resistor.

True, voltage is same in a parallel circuit.

3. More heat will be released in 5 ohm resistor.

False, due to the Joule's law of heating that heat produced is directly proportional to the resistance.

4. More heat will be released in 20 ohm resistor.

True, due to the Joule's law of heating that heat produced is directly proportional to the resistance.

Ans: Statements 2 and 4

Hope I helped