Advertisements
Advertisements
प्रश्न
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
Advertisements
उत्तर
The heat produced is proportional to the resistance of the wire.
संबंधित प्रश्न
Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes?
Write the formula for electric power in terms of potential difference and current.
How much energy does a 100 W electric bulb transfer in 1 minute?
(a) 100 J
(b) 600 J
(c) 3600 J
(d) 6000 J
How many joules of electrical energy are transferred per second by a 6 V; 0.5 A lamp?
(a) 30 J/s
(b) 12 J/s
(c) 0.83 J/s
(d) 3 J/s
Mention three uses of the carbon arc.
Why is the heating element of an electric oven wound on a helix? State the reason.
A battery of e.m.f. 12V and internal resistance 1.6 Ω is connected to two resistors of 4Ω and 6Ω connected in parallel. Calculate:
(i) the current drawn from the battery,
(ii) the power dissipated in each resistor,
(ii)the total power supplied by the battery.
What is the commercial unit of electrical energy? Represent it in terms of joules.
A conductor of 10 Ω is connected across a 6 V ideal source. The power supplied by the source to the conductor is ______.
