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संबंधित प्रश्न
Why should the resistance of:
an ammeter be very small?
Three resistors are connected as shown in the diagram.
Through the resistor 5 ohm, a current of 1 ampere is flowing.
(i) What is the current through the other two resistors?
(ii) What is the p.d. across AB and across AC?
(iii) What is the total resistance
A 5 V battery is connected to two 20 Ω resistors which are joined together in series.
(a) Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
(b) What is the effective resistance of the two resistors?
(c) Calculate the current that flows from the battery?
(d) What is the p.d. across each resistor?
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
If the current passing through a conductor is doubled, what will be the change in heat produced
State three factors on which the heat produced by an electric current depends. How does it depend on these factors?
Complete the following sentence:
A fuse is connected in ........... with the ......... wire.
Find the effective resistance in the following circuit diagrams (Fig.):
An electrical appliance is rated at 1000 KVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in: (i) kWh (ii) joule.
The magnitude of Alternating Current (AC):
