Q7 Two lamps, one with a thick filament (that is. a filament with a relatively l
ID: 1538140 • Letter: Q
Question
Q7
Two lamps, one with a thick filament (that is. a filament with a relatively large cross-sectional area) and one with a thin filament (with a relatively small cross-sectional area), are connected to a battery in series, completing a closed loop. Both the thick and thin filament are composed of the same material and are cut, to the same length. Which of the following statements is true? The current is greater in the lamp with the thick filament. The current is greater in the lamp with the thin filament. The current in each lamp is non-zero, and equal. The current in each lamp is zero. The voltages across each lamp are equal.Explanation / Answer
resistacne R = rho*L/A
rho = resistivity
L =lenght of the filament
A = area of cross section
area of thick filament is more than thin filament
resistance of thick filament < than thin filament
IN series combination the crrent through the components in circuit is same
OPTION (c) <<<========answer
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