Chapter 3 – Current Electricity
Three electric bulbs of 200W, 200 W and 400W are shown in figure. The resultant power of the combination is
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Dec
Three electric bulbs of 200W, 200 W and 400W are shown in figure. The resultant power of the combination is 200 W and 400W are shown in figure. The resultant power of the combination is Three electric bulbs of 200W December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity [...]
The maximum current that flows through a fuse wire before it blows out varies with its radius as
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Dec
The maximum current that flows through a fuse wire before it blows out varies with its radius as The maximum current that flows through a fuse wire before it blows out varies with its radius as December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,
The material of fuse wire should have 1. A high specific resistance and high melting point 2. A low specific resistance and low melting point 3. A high specific resistance and low melting point 4. A low specific resistance and a high melting point
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Dec
The material of fuse wire should have 1. A high specific resistance and high melting point 2. A low specific resistance and low melting point 3. A high specific resistance and low melting point 4. A low specific resistance and a high melting point The power dissipated 6 ohm resistor is December 2, 2020 Category: [...]
A 100 W bulb B1 and two 60 W bulbs B2 and B3, are connected to a 250 V source, as shown in the figure. Now W1,W2 and W3 are the output powers of the bulbs B1,B2 and B3 respectively. Then,
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Dec
A 100 W bulb B1 and two 60 W bulbs B2 and B3, are connected to a 250 V source, as shown in the figure. Now W1,W2 and W3 are the output powers of the bulbs B1,B2 and B3 respectively. Then, A 100 W bulb B1 and two 60 W bulbs B2 and B3 are [...]
A heater (1000 W-100 V) is connected in combination with a resistance R to a 100 V mains as shown in figure. The value of R so, that the heater operates with a power of 62.5 watt.
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Dec
A heater (1000 W-100 V) is connected in combination with a resistance R to a 100 V mains as shown in figure. The value of R so, that the heater operates with a power of 62.5 watt. A heater (1000 W-100 V) is connected in combination with a resistance R to a 100 V mains [...]
A series circuit consists of three identical lamps connected to a battery as in Fig. when the switch S is closed,
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Dec
A series circuit consists of three identical lamps connected to a battery as in Fig. when the switch S is closed, A series circuit consists of three identical lamps connected to a battery as in Fig. when the switch S is closed December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - [...]
A standard 50W electric bulb in series with a room heater is connected across the mains. If the 50W bulb is replaced by 100W bulb the heater output will
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Dec
A standard 50W electric bulb in series with a room heater is connected across the mains. If the 50W bulb is replaced by 100W bulb the heater output will A standard 50W electric bulb in series with a room heater is connected across the mains. If the 50W bulb is replaced by 100W bulb the [...]
Two tungsten lamps A and B of resistances R1 and R2 respectively are connected in a circuit of negligible internal resistance, if R1>R2 (i) The lamp A will glow brightly if lamps are connected in series (ii) the lamb A will glow brightly if lamps are connected in parallel (iii) the lamp B will glow brightly if lamps are connected in series. (iv) the lamb B will glow brightly if lamps are connected in parallel
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Dec
Two tungsten lamps A and B of resistances R1 and R2 respectively are connected in a circuit of negligible internal resistance, if R1>R2 (i) The lamp A will glow brightly if lamps are connected in series (ii) the lamb A will glow brightly if lamps are connected in parallel (iii) the lamp B will glow [...]
A 25W−120V bulb and a 100W−120V bulb are connected in series across 120V line. Which bulb will be brighter?
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Dec
A 25W−120V bulb and a 100W−120V bulb are connected in series across 120V line. Which bulb will be brighter? A 25W−120V bulb and a 100W−120V bulb are connected in series across 120V line. Which bulb will be brighter? December 2, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part [...]
Two bulbs one of 60 W and the other of 100 W , are connected in series across a supply (i) The current through each is same (ii)The potential drop across 60W bulb is more (iii) The potential drop acorss each is the same (iv) The current through 100W bulb is more
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Dec
Two bulbs one of 60 W and the other of 100 W , are connected in series across a supply (i) The current through each is same (ii)The potential drop across 60W bulb is more (iii) The potential drop acorss each is the same (iv) The current through 100W bulb is more The power dissipated [...]