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प्रश्न
Write an expression for calculating electrical power in terms of current and resistance.
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उत्तर
Electrical power in terms of current and resistance is P = I2R.
संबंधित प्रश्न
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).
The substance having infinitely high electrical resistance is called:
(a) conductor
(b) resistor
(c) superconductor
(d) insulator
If the length of a wire is doubled by taking more of wire, what happens to its resistance?
Write down an expression for the resistance of a metallic wire in terms of the resistivity.
Give the law of combination of resistances in series.
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
State and explain the laws of resistance.
Two resistors having 2Ω and 3Ω resistance are connected—(i) in series, and (ii) in parallel. Find the equivalent resistance in each case.
