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E = I R = 10 x 20 = 200 Volts

Note: Don't try this at home ! The power dissipated by the resistor is I2R = 2,000 watts.

What you have there is a heavy-duty industrial-strength toaster !

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14y ago
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13y ago

You should know the voltage first, than use the Ohm's law V=IR to solve it

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15y ago

V=r*i=10 (v)

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14y ago

.8 Volts or 800mV

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Q: What is the current when the resistance is 20 ohms?
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