# How much voltage does a resistor drop?

## How much voltage does a resistor drop?

The voltage dropped by a resistor is given by Ohm’s Law: V = I R. So if you know exactly how much current your device will draw, you could choose a resistor to drop exactly 7.5 V, and leave 4.5 V for your device, when that current is run through it.

## What is the voltage drop across the 15 ohm resistor?

30 V
The voltage drop across a 15 Ω resistor in the circuit is 30 V having the polarity indicated.

What is the voltage drop across the 10 ohm resistor Brainly?

Voltage drop across 10 ohm -> Vr1 = 10 * i1 = 10 × 0.227 volts. …

### What resistor do I need to drop 12v to 6v?

If you have a device lacks this type of internal voltage protection, you can supply it by constructing an external resistive voltage divider circuit. It’s possible to step 12 volts down to 6 volts by incorporating a pair of 10,000-ohm resistors into the circuit.

### What is the current in the 4 ohm resistor?

1A
Current through the circuit can be determined by ohm’s law. Thus current through 4Ω resistor is 1A, as 4Ω and Rp are in series and same current flow through them.

What is the voltage drop across the 10.0 Ω resistor?

#### What is the voltage drop across the resistor?

The voltage drop across the resistor is the same as the voltage of the DC source. This comes from Kirchoff’s Voltage Law, which states that all the voltages in a given circuit “loop” must add up to zero.

#### How to find the voltage drop across R1?

Method 2: 1 Find i1 = V (supply) / R (equivalent) = 0.227 A#N#Then,Voltage drop across R1 will be Vr1 = R1 2 i1 = 10 × 0.227 = 2.27… 3 Thus, Va = Vr2 = Vr3 = 2.73 volts More

What is the total resistance of 2 × 100 Ω resistors?

Your 2 × 100 Ω resistors are in series so your total circuit resistance is 200 Ω and this will restrict the current to half of the value obtained in the single resistor circuit. simulate this circuit– Schematic created using CircuitLab

## How to calculate voltage across a resistor in a circuit?

To calculate voltage across a resistor in a series circuit, start by adding together all of the resistance values in the circuit. Then, divide the voltage across the circuit by the total resistance to find the current. Once you have the current, calculate voltage for the individual resistors by multiplying the current by the resistance.