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A sphere of radius 10 mm that carries a charge of 8 nC = 8 x 10-9 C is attached at the end of an insulating string and is whirled in a circle. The rotation frequency is 100rt rad/s.(a) What is the basic definition of current in terms of charge?(b) What average current does this rotating charge represent? |
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Answer» hat,Radius = 10 mmCharge = 8 nCRotating frequency = 100π rad/sWe NEED to CALCULATE the TIME periodUsing formula of time periodPut the value into the formula(a). We need to define the basic definition of current in terms of charge Using definition of chargeThe charge is equal to the product of current and time.In mathematically,So, The current in terms of charge is(b). We need to calculate the average current Using formula of currentWhere, Q = chargeT = time periodPut the value into the formulaHence, (a). the current in terms of charge is .(b). The average current is |
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