Observe the circuit:
(a) Identify the component marked ' $A$ '.
(b) If the circuit is connected to a $10$ $V$ A.C. supply and the total resistance of the circuit is $30$ ohms, calculate the heat produced after $20$ minutes.

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Solution

(a) The component marked as A is called as Diode.
(b) The heat produced in the circuit is
$H = V^{2} t R = 10^{2} \times 20 \times 60 \times 30$
$\Rightarrow H = 36 \times 10^{5} J$

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Similar questions

In the circuit diagram given below five resistances of $10 Ω, 40 Ω, 30 Ω, 20 Ω, a n d 60 Ω$
are connected in series to a 12 V battery.

Calculate :
(a) the total resistance in the circuit.
(b) the total current flowing in the circuit.

R_{1} = 10 Ω

R_{2} = 40 Ω

R_{3} = 30 Ω

R_{4} = 20 Ω

R_{5} = 60 Ω

R

100 Ω

100 Ω

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