use two 100-ohm resistors, two 20-ohm resistors and two 47-ohm resistors in any combination to get any of these currents......
a) I=0.015 A
b) I=0.031 A
c) I=0.064 A
d) I=0.6 A
To solve this, you need to know the EMF.
Voltage source is required in this question.
To find the combinations of resistors that can achieve the given currents, 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):
I = V / R
To determine the voltages required, we can rearrange the equation to solve for V:
V = I * R
Now, let's calculate the voltages required for each current value:
a) I = 0.015 A
V = 0.015 A * R
The voltages will depend on the value of R.
b) I = 0.031 A
V = 0.031 A * R
c) I = 0.064 A
V = 0.064 A * R
d) I = 0.6 A
V = 0.6 A * R
Now, let's see the possible combinations of resistors to achieve these voltages:
a) For I = 0.015 A:
Possible combinations:
- Using two 100-ohm resistors in series: V = 0.015 A * 100 Ω = 1.5 V
- Using two 47-ohm resistors in series: V = 0.015 A * 47 Ω = 0.705 V
b) For I = 0.031 A:
Possible combinations:
- Using two 100-ohm resistors in series: V = 0.031 A * 100 Ω = 3.1 V
c) For I = 0.064 A:
Possible combinations:
- Using two 100-ohm resistors in series: V = 0.064 A * 100 Ω = 6.4 V
d) For I = 0.6 A:
Possible combinations:
- Using two 20-ohm resistors in parallel: V = 0.6 A * 20 Ω = 12 V
Please note that these are just a few examples of possible combinations, and there may be other combinations that can achieve the desired currents.