Chapter 3 – Current Electricity
A 200W and a 100W , both meant for operation at 220V are connected to a 220V supply. The total power consumed by them will be
02
Dec
A 200W and a 100W , both meant for operation at 220V are connected to a 220V supply. The total power consumed by them will be A 200W and a 100W both meant for operation at 220V are connected to a 220V supply. The total power consumed by them will be December 2, 2020 Category: [...]
Two electric bulbs, one of 200V, 40W, and the other 220V, 100W are connected in a house wiring circuit
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Dec
Two electric bulbs, one of 200V, 40W, and the other 220V, 100W are connected in a house wiring circuit 100W are connected in a house wiring circuit 40W and the other 220V one of 200V Two electric bulbs December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part [...]
A 100W bulb and a 25W bulb are designed for the same voltage. They have filaments of the same length and material. The ratio of the diameter of 100W bulb to that of the 25W bulb is
02
Dec
A 100W bulb and a 25W bulb are designed for the same voltage. They have filaments of the same length and material. The ratio of the diameter of 100W bulb to that of the 25W bulb is A 100W bulb and a 25W bulb are designed for the same voltage. They have filaments of the [...]
Two electric bulbs rated at 25 W, 220 V and 100 W, 220 V are connected in series across a 220 V voltage source. The 25 W and 100 W bulbs now draw P1 and P2 powers respectively
02
Dec
Two electric bulbs rated at 25 W, 220 V and 100 W, 220 V are connected in series across a 220 V voltage source. The 25 W and 100 W bulbs now draw P1 and P2 powers respectively 220 V and 100 W 220 V are connected in series across a 220 V voltage source. [...]
An electric bulb rated for 500W at 100V is used in circuit having 200V supply. What resistance R that must be put in series with the bulb, so that the bulb delivers 500 W.
02
Dec
An electric bulb rated for 500W at 100V is used in circuit having 200V supply. What resistance R that must be put in series with the bulb, so that the bulb delivers 500 W. An electric bulb rated for 500W at 100V is used in circuit having 200V supply. What resistance R that must be [...]
Two identical batteries each of emf E=2 volt and internal resistance r=1.0 ohm are available to produce heat in an external resistance R = 0.5 ohm by passing a current through it. The maximum Joulean power that can be developed across R using these batteries is
02
Dec
Two identical batteries each of emf E=2 volt and internal resistance r=1.0 ohm are available to produce heat in an external resistance R = 0.5 ohm by passing a current through it. The maximum Joulean power that can be developed across R using these batteries is The power dissipated 6 ohm resistor is December 2, [...]
Three equal resistance, each of R ohm, are connected as shown in the figure. A battery of 2V and of internal resistance 0.1 ohm is connected across the circuit. The value of R for which the heat generated in the circuit maximum will be
02
Dec
Three equal resistance, each of R ohm, are connected as shown in the figure. A battery of 2V and of internal resistance 0.1 ohm is connected across the circuit. The value of R for which the heat generated in the circuit maximum will be are connected as shown in the figure. A battery of 2V [...]
If power in external resistance R is maximum, then
02
Dec
If power in external resistance R is maximum, then If power in external resistance R is maximum then December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,
Current i is being driven through a cell of emf ε and internal resistance r, as shown (i) the cell absorbs energy at rate of εi (ii) The cell stores chemical energy at the rate of (εi−i^2r) (iii) The potential difference across the cell is ε+ir (iv) some heat is produced in the cell
02
Dec
Current i is being driven through a cell of emf ε and internal resistance r, as shown (i) the cell absorbs energy at rate of εi (ii) The cell stores chemical energy at the rate of (εi−i^2r) (iii) The potential difference across the cell is ε+ir (iv) some heat is produced in the cell Current [...]
A cell of emf ‘E’ and internal resistance ‘r’ drives a current i through an external resistance R.
02
Dec
A cell of emf ‘E’ and internal resistance ‘r’ drives a current i through an external resistance R. A cell of emf 'E' and internal resistance 'r' drives a current i through an external resistance R. December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,