Physics
Write an expression for the electrical energy spent in flow of current through an electrical appliance in terms of current, resistance and time.
Related Questions
Assertion (A): In series combination of electric bulbs, the bulb of lower power emits more light than that of the higher power.
Reason (R): The lower power bulb in series gets more current than the higher power bulb
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Assertion (A): In parallel combination of electrical appliances, total power consumption is equal to the sum of the power of individual appliances.
Reason (R): In parallel combination, the voltage across each appliance is the same.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Write an expression for the electrical power spent in flow of current through a conductor in terms of (a) resistance and potential difference, (b) current and resistance.
State the S.I. unit of electrical power.