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प्रश्न
Name any two devices, which are working on the heating effect of the electric current.
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उत्तर
- Electric heater
- Fuse wire
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संबंधित प्रश्न
What Makes an Electric Current Flow in a Wire?
An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
(i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY.
The figure given below shows an electric circuit in which current flows from a 6 V battery through two resistors.
- Are the resistors connected in series with each other or in parallel?
- For each resistors, state the p.d. across it.
- The current flowing from the battery is shared between the two resistors. Which resistor will have bigger share of the current?
- Calculate the effective resistance of the two resistors.
- Calculate the current that flows from the battery.
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(a) this way they required less current
(b) if one lamp fails the others remain lit
(c) this way they require less power
(d) if one lamp fails the other also fail
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- The energy consumed in 50 hours, and
- The cost of energy consumed at ₹ 4.20 per kWh.
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Give the electric current unit.
An ammeter is always placed in parallel with the circuit.
