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Remember Ohm's Law ; V = IR
That is volts = amps(current) X Resistance.
Algebraically rearrange
R = V/I
V = 20 volts
I = 200 mA = 200/1000 Amps = 0.2 amps.
Hence
R = 20 V / 0.2 Amps
R = 100 Ohms
What else can I help you with?
Four 50 ohms are connected in series calculate the current in the circuit?
The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance.
What voltage is necessary to produce a current of 200 amperes through a resistance of 1 X 10-3 ohms?
voltage = current x resistance, so: voltage = 200 x 0.001 = 0.2 volts
Calculate the resistance of a bulb that draws 0.6 A of current with a potential difference of 3 V?
V = I.R R = V/I R = 110/0.5 R = 220 Ohms
Calculate the current taken by a 100 watts lamp having a working resistance of 200?
0.02 amperes
Calculate the current in a series of four 50ohms bulbs?
The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance. mistybabe r19 :DD
How do you calculate short circuit current?
A short circuit = 0 ohm, from this one can use ohms law to calculate the current, that is E/R voltage divided by resistance as in this instance your resistance is zero and you can't divide by zero so your current will be infinit. In other words if your power supply is large enough to supply 200 amp, your current on a short circuit will be 200 amp.
Diode reverse breakdown14v current of 70mA and an un-stabilised supply voltage of 28v calculate resistance?
If a circuit element has a voltage of 14V and a current of 70mA, then the resistance of the circuit element is 200 ohms. This is ohm's law. The resistance or type of the power supply is meaningless.
What is a c200 current transformer?
This is a class of current transformers, and is a fairly low class. This has to do with what kind of burden can be placed on the secondary. A general rule is a C200 current transformer can supply ~200 volts at full ratio to its' secondary. If the burden (the CT resistance + cable resistance + relay or instrument resistance) times the maximum expected current is higher than 200 volts, the CT is likely to saturate. During multiple fault events, a CT may keep some magnetizing current causing CT saturation to be higher on a reclose event. Typically CT's are sized and their ratios are chosen to minimize saturation when feasible.
What type of wire material should be used for a 200 amp service, aluminum or copper?
Copper wire is recommended for a 200 amp service due to its higher conductivity and lower resistance compared to aluminum wire.
How any volts are produced in a circuit with 40 amp's of current flowing through a wire with 5 ohms of resistance?
It is a voltage (potential) applied to a load that causes a current to flow through the load. Ohm's Law encapsulates this principal and states Volts = Current x Resistance. In your example, the applied voltage would be 200 volts.
A desktop computer and monitor together draw about 0.6 A of current They plug into a wall outlet that is 120 V What is the resistance in ohmsof the computer-monitor combination?
100
Which is bigger resistance 20 ohm or 200 ohm?
200 ohm
