You are given three circuits. Identify the circuit with the minimum dissipation of heat.

For circuit (I) : Net Resistance (R) = 3 Ω Voltage (V) = 6 V Heat Dissipated = P = W .......... (1) For circuit (II) : As resistances are in parallel combination and also have equal value then So, net resistance (R) = Ω Voltage (V) = 6V Heat Dissipated = P = W .......... (2) For circuit (III) : As resistances are in series combination then So, net resistance (R) = 5 Ω Voltage (V) = 6V Heat Dissipated = P = W .......... (3) From (1), (2) and (3) it is clearly visible that in circuit (iii) heat dissipation is minimum.

Name the physical quantity which is measured in (i) kW, (ii) kWh. (iii) Wh

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Name the S.I. unit of electrical energy. How is it related to Wh?

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Physics

You are given three circuits. Identify the circuit with the minimum dissipation of heat.

Current Electricity

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Name the physical quantity which is measured in (i) kW, (ii) kWh. (iii) Wh

Name the S.I. unit of electrical energy. How is it related to Wh?