Advertisements
Advertisements
प्रश्न
Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.
Advertisements
उत्तर
Given Charge, Q = 96000C
Time, t = 1hr = 60 x 60 = 3600s
Potential difference, V= 50volts
Now we know that H = VIt
So we have to calculate I first
As I = `Q/t`
∴ I = `96000/3600`
= `80/3A`
H = V × I × t
By substituting the values,
`50 xx 80/3 xx 60 xx 60`
= 4.8 × 106 J
Therefore, the heat generated is 4.8 × 106 J.
APPEARS IN
संबंधित प्रश्न
An electric kettle rated at 220 V, 2.2 kW, works for 3 hours. Find the energy consumed and the current drawn.
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
What is meant by the heating effect of current? Give two applications of the heating effect of current.
An electric iron of 1100 W is operated for 2 hrs daily. What will be the electrical consumption expenses for that in the month of April? (The electric company charges Rs 5 per unit of energy).
Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.
A coil of an alloy _______ is used in electric heater cooker as a resistor.
Write two devices based on the heating effect of electric current.
True or False – If False give the correct answer
The fuse wire does not melts whenever there is overload in the wiring.
Name any two appliances which work under the principle of heating effect of current.
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of:
The heating element of an electric iron is made up of:
Assertion: Bending of wire decreases the resistance of the electric wire.
Reason: The resistance of a conductor depends on length, thickness, nature of material and temperature of the conductor.
Can we use the same fuse in a geyser and a television set? Explain.
______ wire is used in the filament of the bulbs.
Copper wire offers very little ______ and does not get heated up quickly.
Name the effect of the current responsible for the glow of the bulb in an electrical circuit.
The electric fuse works on the Joule heating principle.
