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प्रश्न
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
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उत्तर
When the live wire comes in contact with the metal body of the electrical gadget.
संबंधित प्रश्न
If the current through a floodlamp is 5 A, what charge passed in 10 seconds?
(a) 0.5 C
(b) 2 C
(c) 5 C
(d) 50 C
State the factors on which the strength of electric current flowing in a given conductor depends.
In the circuit diagram given below five resistances of 10 Ω, 40 Ω, 30 Ω, 20 Ω, and 60 Ω are connected as shown to a 12 V battery.
Calculate:
(a) total resistance in the circuit.
(b) total current flowing in the circuit.
In the circuit diagram given below, three resistors R1, R2, and R3 of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown
Calculate:
- current through each resistor.
- total current in the circuit.
- total resistance in the circuit.
(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:
(i) Total resistance.
(ii) Current shown by the ammeter A
How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
Study the following circuit and find out:
(i) Current in 12 Ω resistor.
(ii) The difference in the readings of A1 and A2, if any.
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
Give the electric current unit.
