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| 1. |
A 60 watt bulb carries a current 0.5 amp. The total charge passing through it in 1 hour is : (a) 1800 coulomb (b) 2400 coulomb (c) 3000 coulomb (d) 3600 coulomb |
| Answer» <p class="MsoNormal" style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>Correct option (a) 1800 coulomb </strong></span></span></p><p class="MsoNormal" style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>Explanation:</strong></span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">The total charge passing through bulb is </span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">q = it ...(1)</span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">Here, i = 0.5 A, t = 1 hour</span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">t = 1 × 60 × 60 sec t = 3600 sec</span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">from eq. (i)</span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"> = 0.5 × 3600 = 1800 coulomb</span></span></p> | |