What is the equation for: A 350 ohm resistor is connected to a variable-voltage

Question

What is the equation for:
A 350 ohm resistor is connected to a variable-voltage power supply
(a) What voltage is necesssry to csuse a current of 0.9 A in the resistor?
(b) What current flowz in the resistor when the voltage is 17 V ? What is the equation for:
A 350 ohm resistor is connected to a variable-voltage power supply
(a) What voltage is necesssry to csuse a current of 0.9 A in the resistor?
(b) What current flowz in the resistor when the voltage is 17 V ?
A 350 ohm resistor is connected to a variable-voltage power supply
(a) What voltage is necesssry to csuse a current of 0.9 A in the resistor?
(b) What current flowz in the resistor when the voltage is 17 V ?

Explanation / Answer

V(t) = variable Voltage

i(t) = variable current

R = resistance

so equation : V(t) = i(t) R

a)

i(t) = 0.9

V(t) = i(t) R = 0.9 x 350 = 315 volts

b)

V(t) = 17 volts

V(t) = i(t) R

17 = i(t) (350)

i(t) = 0.0486 A

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