Advertisements
Advertisements
प्रश्न
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.
Advertisements
उत्तर
Potential difference V = ?
Current I = 300 mA = 0.2 A,
R = 20 Ω
V = IR
V = `3/10 xx 20`
= 6 V
APPEARS IN
संबंधित प्रश्न
What do the letters p.d. stand for?
Define one coulomb charge.
A resistance of 20 ohms has a current of 2 amperes flowing in it. What potential difference is there between its ends?
What is the ratio of potential difference and current known as?
The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?
100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor?
Define the term ‘volt’.
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:
(i) The resistance of the wire, and
(ii) The heat energy produced in 1 minute.
Potential near a charge is the measure of its ______ to bring a positive charge at that point.
What does the positive and negative sign of potential convey?
