EASY
12th West Bengal Board
IMPORTANT
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Two electric bulbs whose resistance are in the ratio are connected in parallel to a constant voltage source. The power dissipated in them will have the ratio
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Important Questions on Thermal Effect and Chemical Effect of Current
MEDIUM
12th West Bengal Board
IMPORTANT
Two bulbs when connected in parallel to a source take W each. The total power consumed when they are connected in series with the same source is
EASY
12th West Bengal Board
IMPORTANT
Two heating coils, one of fine wire and the other of thick wire made of the same material and of the same length, are connected in series and in parallel. Which of the following statements is correct?
MEDIUM
12th West Bengal Board
IMPORTANT
If a bulb is to be worked in line, the resistance to be connected in series with the bulb is
HARD
12th West Bengal Board
IMPORTANT
A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled, if
EASY
12th West Bengal Board
IMPORTANT
A factory is served by a power supply line. $\mathrm{In}$ a circuit protected by a fuse marked , The maximum number of lamp in parallel that can be turned on is-
EASY
12th West Bengal Board
IMPORTANT
A condenser having a capacity is charged to and then the plates of the capacitor are connected to a resistance wire. The heat produced in Joule will be-
MEDIUM
12th West Bengal Board
IMPORTANT
If power is transmitted through a line at , the powerless in the form of heat will be-
MEDIUM
12th West Bengal Board
IMPORTANT
A bulb and a bulb are joined in series and connected to the mains. Which bulb will grow bright ?
