303352
When a switch is in OFF position, Circuit starting from the positive terminal of the cell stops at the switch. Circuit is open. No current flows through it. Current flows after some time. Choose the combination of correct answer from the following.
1 All are correct.
2 (ii) and (iii) are correct.
3 Only (iv) is correct.
4 Only (i) and (ii) are correct.
Explanation:
(ii) and (iii) are correct. When the switch is in OFF position, circuit is incomplete. It is said to be open and therefore, no current flows through it.
ELECTRIC CURRENT AND ITS EFFECTS
303353
During a doorbell ringing:
1 Current always flows in the circuit.
2 Electromagnet is always present.
3 Striker is always in contact with metal gong.
4 Striker always repeatedly hits metal gong.
Explanation:
Striker always repeatedly hits metal gong. Striker repeatedly hits the metal gong when doorbell is ringing. This can be observed in regular bells used at homes. 9
ELECTRIC CURRENT AND ITS EFFECTS
303354
When two or more cells are joined together it forms a:
1 Transistor
2 Battery
3 Dynamo
4 Radio
Explanation:
Battery When we connect two or more cells in such a way that the positive terminal of one cell is connected to the negative terminal of the next cell, such a combination of two or more cells is called a battery.
ELECTRIC CURRENT AND ITS EFFECTS
303355
The bulb glows only when ................. flows through it.
1 Current
2 Light
3 Air
4 Water
Explanation:
Current The bulb glows only when current flows through the circuit and current heats the filament of bulb and bulb gives light.
303352
When a switch is in OFF position, Circuit starting from the positive terminal of the cell stops at the switch. Circuit is open. No current flows through it. Current flows after some time. Choose the combination of correct answer from the following.
1 All are correct.
2 (ii) and (iii) are correct.
3 Only (iv) is correct.
4 Only (i) and (ii) are correct.
Explanation:
(ii) and (iii) are correct. When the switch is in OFF position, circuit is incomplete. It is said to be open and therefore, no current flows through it.
ELECTRIC CURRENT AND ITS EFFECTS
303353
During a doorbell ringing:
1 Current always flows in the circuit.
2 Electromagnet is always present.
3 Striker is always in contact with metal gong.
4 Striker always repeatedly hits metal gong.
Explanation:
Striker always repeatedly hits metal gong. Striker repeatedly hits the metal gong when doorbell is ringing. This can be observed in regular bells used at homes. 9
ELECTRIC CURRENT AND ITS EFFECTS
303354
When two or more cells are joined together it forms a:
1 Transistor
2 Battery
3 Dynamo
4 Radio
Explanation:
Battery When we connect two or more cells in such a way that the positive terminal of one cell is connected to the negative terminal of the next cell, such a combination of two or more cells is called a battery.
ELECTRIC CURRENT AND ITS EFFECTS
303355
The bulb glows only when ................. flows through it.
1 Current
2 Light
3 Air
4 Water
Explanation:
Current The bulb glows only when current flows through the circuit and current heats the filament of bulb and bulb gives light.
303352
When a switch is in OFF position, Circuit starting from the positive terminal of the cell stops at the switch. Circuit is open. No current flows through it. Current flows after some time. Choose the combination of correct answer from the following.
1 All are correct.
2 (ii) and (iii) are correct.
3 Only (iv) is correct.
4 Only (i) and (ii) are correct.
Explanation:
(ii) and (iii) are correct. When the switch is in OFF position, circuit is incomplete. It is said to be open and therefore, no current flows through it.
ELECTRIC CURRENT AND ITS EFFECTS
303353
During a doorbell ringing:
1 Current always flows in the circuit.
2 Electromagnet is always present.
3 Striker is always in contact with metal gong.
4 Striker always repeatedly hits metal gong.
Explanation:
Striker always repeatedly hits metal gong. Striker repeatedly hits the metal gong when doorbell is ringing. This can be observed in regular bells used at homes. 9
ELECTRIC CURRENT AND ITS EFFECTS
303354
When two or more cells are joined together it forms a:
1 Transistor
2 Battery
3 Dynamo
4 Radio
Explanation:
Battery When we connect two or more cells in such a way that the positive terminal of one cell is connected to the negative terminal of the next cell, such a combination of two or more cells is called a battery.
ELECTRIC CURRENT AND ITS EFFECTS
303355
The bulb glows only when ................. flows through it.
1 Current
2 Light
3 Air
4 Water
Explanation:
Current The bulb glows only when current flows through the circuit and current heats the filament of bulb and bulb gives light.
303352
When a switch is in OFF position, Circuit starting from the positive terminal of the cell stops at the switch. Circuit is open. No current flows through it. Current flows after some time. Choose the combination of correct answer from the following.
1 All are correct.
2 (ii) and (iii) are correct.
3 Only (iv) is correct.
4 Only (i) and (ii) are correct.
Explanation:
(ii) and (iii) are correct. When the switch is in OFF position, circuit is incomplete. It is said to be open and therefore, no current flows through it.
ELECTRIC CURRENT AND ITS EFFECTS
303353
During a doorbell ringing:
1 Current always flows in the circuit.
2 Electromagnet is always present.
3 Striker is always in contact with metal gong.
4 Striker always repeatedly hits metal gong.
Explanation:
Striker always repeatedly hits metal gong. Striker repeatedly hits the metal gong when doorbell is ringing. This can be observed in regular bells used at homes. 9
ELECTRIC CURRENT AND ITS EFFECTS
303354
When two or more cells are joined together it forms a:
1 Transistor
2 Battery
3 Dynamo
4 Radio
Explanation:
Battery When we connect two or more cells in such a way that the positive terminal of one cell is connected to the negative terminal of the next cell, such a combination of two or more cells is called a battery.
ELECTRIC CURRENT AND ITS EFFECTS
303355
The bulb glows only when ................. flows through it.
1 Current
2 Light
3 Air
4 Water
Explanation:
Current The bulb glows only when current flows through the circuit and current heats the filament of bulb and bulb gives light.
9