Determine the voltage on the electric hotplate, if the resistance of its spiral is R = 300 Ohm
| April 21, 2021 | education
Determine the voltage on the electric hotplate, if the resistance of its spiral is R = 300 Ohm, and during the time t = 360 s, the charge passed q = 240 C.
R = 300 ohms.
t = 360 s.
q = 240 Cl.
U -?
We express the voltage on the electric tile U according to Ohm’s law for a section of the circuit according to the formula: U = I * R, where I is the current in the tile, R is the resistance of the tile.
According to the definition, the current strength I is the electric charge q, which passes through the cross-section of the conductor per unit of time t: I = q / t.
The formula for determining the voltage will take the form: U = q * R / t.
U = 240 C * 300 Ohm / 360 s = 200 V.
Answer: the tile is connected to a network with a voltage of U = 200 V.
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