A 63 Ω resistor is connected to a 4.7 V battery
a) When the switch is closed, calculate the current I. Answer in units of A.
A 7.4 Ω resistor is connected to a 4.7 V battery When the switch is closed, calculate the current I.
A 69 Ω resistor is connected to a 4.7 V battery When the switch is closed, calculate the current I.
In each case the current is I = V/R
V = 4.7 Volts R is the given resistance
Get to know Ohm's law. Do the numbers.
To calculate the current in each circuit, we can use Ohm's Law, which states that the current (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by its resistance (R). The formula for Ohm's Law is:
I = V / R
Let's calculate the current in each circuit:
a) For the first circuit with a 63 Ω resistor and a 4.7 V battery:
I = 4.7 V / 63 Ω = 0.075 A
b) For the second circuit with a 7.4 Ω resistor and a 4.7 V battery:
I = 4.7 V / 7.4 Ω = 0.635 A
c) For the third circuit with a 69 Ω resistor and a 4.7 V battery:
I = 4.7 V / 69 Ω = 0.068 A
Therefore, the current in each circuit is:
a) 0.075 A
b) 0.635 A
c) 0.068 A