#### Question

In which of the following cases more electrical energy is consumed per hour?

(*i*) A current of 1 ampere passed through a resistance of 300 ohms.

(*ii*) A current of 2 amperes passed through a resistance of 100 ohms.

#### Solution

(i) *I* = 1 A

*R* = 300 Î

*t* = 1 h

Electrical energy consumed = *`I^2xxRxxt`*

= (1)^{2} (300) (1)

= 300 Wh

(ii) *I* = 2 A

*R* = 100 Î

Electrical energy consumed = `I^2xxRxxt=(2)^2(100)(1)=400Wh`

Thus, more electrical energy is consumed in case (ii).

Is there an error in this question or solution?

Solution In Which of the Following Cases More Electrical Energy is Consumed per Hour? (I) a Current of 1 Ampere Passed Through a Resistance of 300 Ohms. (Ii) a Current of 2 Amperes Passed Through a Resistance of 100 Ohms. Concept: Electric Current and Circuit.