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An electric iron of resistance 20 ohms takes a current of 5A Calculate the heat developed in 30 seconds?
heat developed = 5*5*20*30 = 15000 joules
AnswerWith the information supplied, you can only determine the work done (W) by the circuit, not the heat (Q). To do so, you will need to know the mass (m) and specific heat capacity (C) of the conductor, and the temperature-difference between the conductor and its surroundings. The equation you need to do this is:
W - Q = m C (Tf-Ti)
With the information supplied, you can only calculate the work done: W = I2Rt.
What else can I help you with?
What is a material that conducts electric current slowly?
Material with high resistance
Will a circuit component with a high resistance will have a low electric current?
Yes
What effect does decreased resistance have on a circuit?
resistance is the opposition to the flow of an electric current, therefore the current will decrease as the resistance increases. Resistance also creates heat. This is how the light globes in a circuit light up.
What is the formula of electric current?
the formula for electric current is VI ,where v is voltage then I is the current. the unit used for current is ampere and volts for voltage. multiply the total I to the Voltage The formular of electric current is given by I=V/R ,I=P/V
Of these 4 copper wood silicon aluminum which material would have the highest resistance to the flow of electric current?
silicon
How do we calculate?
V = I x R V = voltage, I = Current, R = Resistance or it can be calculate like this V = P / I V = Voltage, P = Electric Power, I = Current
What will an electric current follow?
An electric current follows the path of least resistance.
What is the role of resistance in an electric circuit and how does it affect the flow of current?
Resistance in an electric circuit is the opposition to the flow of electric current. It is measured in ohms. Resistance affects the flow of current by reducing it, as higher resistance leads to lower current flow. This relationship is described by Ohm's Law, which states that current is inversely proportional to resistance in a circuit.
What is the term used for the hindrance a conductor creates to the flow of electric current?
Resistance is the hindrance a conductor creates to the flow of electric current
The current in an electric current varies inversly as the resistance when the current is 25 amps the resistance is 16ohms What is the current when the resistance is 10ohms?
40 A -providing the voltage remains constant.
What is the path that an electrical current travels?
electric current
Can you give us problem about electric current?
Certainly! Here's a problem: Calculate the resistance of a conductor if a current of 2 amperes flows through it when a voltage of 10 volts is applied. Use Ohm's Law (V = IR) to find the resistance.
What are the three elements of electricity?
The three basic elements of electricity are voltage, current, and resistance. Voltage is the force or pressure that drives the electrical current. Current is the flow of electric charge. Resistance is the opposition to the flow of electric current.
Would increasing the resistance increase electric current?
no
What does a variable resistor do and how does it affect the flow of electric current in a circuit?
A variable resistor is a component that can change its resistance value. By adjusting the resistance, it can control the flow of electric current in a circuit. Increasing the resistance reduces the current flow, while decreasing the resistance increases the current flow. This allows for precise control of the current in a circuit.
Does a good conductor has a high resistance?
No, a good conductor has a low resistance.
What opposes the flow of an electric currents?
Resistance in OMS: In alternating current is is measured in impedance.
