Advertisements
Advertisements
प्रश्न
A cell of e.m.f 2.0 V and internal resistance 1Ω is connected to the resistors of 3Ω and 6Ω in series. Calculate:
(i) the current drawn from the cell,
(ii) the p.d. across each resistor,
(iii) the terminal voltage of the cell and
(iv) the voltage drop.
Advertisements
उत्तर
Total resistance of the circuit R = 1 + 3 + 6 = 10 Ω
(i) The current drawn from the cell = `"E"/"R" = 2.0/10 = 0.2` A
(ii) The p.d. across 3 Ω resistor V1 = IR1 = 0.2 × 3 = 0.6V
The p.d. across 6 Ω resistor V2 = IR2 = 0.2 × 6 = 1.2 V
(iii) The terminal voltage of the cell V = V1 + V2
= 0.6 + 1.2 = 1.8 V
(iv) The voltage drop = E - V = 2.0 - 1.8 = 0.2 V
संबंधित प्रश्न
Name a device that helps to maintain a potential difference across a conductor.
How much energy is transferred by a 12 V Power supply to each coulomb of charge which it moves around a circuit?
In the circuit shown below:
The potential difference across the 3 Ω resistor is:
Write an expression for the electrical power spent in flow of current through a conductor in terms of current and resistance.
Which one of the following is the correct set-up for studying the dependence of the current on the potential difference across a resistor and why?
Five resistors of different resistances are connected together as shown in the figure. A 12 V battery is connected to the arrangement.
Calculate:
(i) the total resistance in the circuit
(ii) the total current flowing in the circuit.
Electric potential is a ____________.
An electric charge always flows from a point at a ______ to a point at a ______.
______ is work done per unit charge.
What does the positive and negative sign of potential convey?
