SATHEE: Current Electricity 3 Question 12

Current Electricity 3 Question 12

11. In the circuit shown in figure the heat produced in the $5 Ω$ resistor due to the current flowing through it is $10 c a l / s$ .

(1981, 2M)

The heat generated in the $4 Ω$ resistor is

(a) $1 c a l / s$

(b) $2 c a l / s$

(d) $4 c a l / s$

Objective Questions II (One or more correct option)

Show Answer

Solution:

Since, resistance in upper branch of the circuit is twice the resistance in lower branch. Hence, current there will be half.

Now, $P_{4} = (i / 2)^{2} (4)$

$(P = i^{2} R)$

$P_{5} = (i)^{2} (5)$

or $\frac{P_{4}}{P_{5}} = \frac{1}{5}$

$∴ P_{4} = \frac{P_{5}}{5} = \frac{10}{5} = 2 c a l / s$

$∴$ Correct option is (b).

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Current Electricity 3 Question 12

11. In the circuit shown in figure the heat produced in the 5Ω resistor due to the current flowing through it is 10cal/s.

Objective Questions II (One or more correct option)

Solution:

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11. In the circuit shown in figure the heat produced in the $5 Ω$ resistor due to the current flowing through it is $10 c a l / s$ .