Advertisements
Advertisements
प्रश्न
Keeping the potential difference constant, the resistance of a circuit is doubled. The current will become:
विकल्प
double
half
one-fourth
Four times
उत्तर
half
As we know from Ohm’s law:
Voltage = Current x Resistance
V = IR
If the voltage is constant, the resistance is doubled and the current becomes half.
APPEARS IN
संबंधित प्रश्न
What is the SI unit of potential difference?
How much energy is transferred by a 12 V Power supply to each coulomb of charge which it moves around a circuit?
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when: a current of 2 A flows through it for 10 s?
The other name of potential difference is:
Keeping the resistance constant, the potential difference applied across the ends of a component is halved. By how much does the current change?
What is the ratio of potential difference and current known as?
Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential differences of the battery will be ____________ V.
What is the combined resistance of each of the networks between A and B shown in fig. ?
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.
