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chipM
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Homework Statement
please cheack my answears and see if they are right, please help me solve the wrong ones
thankyou !
(1)if you were to expend 10 J of work to push a 1 C charge against an electric field , what would be its change of Voltage ?
voltage = electric potential energy / charge
10/6.25x10^18
=1.6x10^-18 V
(2)(why is it safe to remain inside a car during a lightning storms?)
since like charges repel the electrons on the metal surface repel electrons of the lightining bolt hence its safe .
(3)your elcetronics friend needs a 20 ohm resistor and only has 40 ohm resistors , how can he combine them to produce a 20 ohm resistor ?
by putting them in parallel
(4)when preparing to undergo an MRI scan, why are patients advised to remove eyeglass watches jewlarry and other metal objects ?
(seriosuly i got no clue for this , maybe a hint? or two ? )