0
What happens when a coil or wire is connected to a source of direct current?
Wiki User
∙ 10y ago
Since the resistance of ordinary wire is so small, a large current (Amps) flows in
the coil. It most likely stresses the power supply, and the wire most likely gets hot.
But as long as the hook-up lasts, you've got a significant magnetic field inside the coil.
You can pick up pins, needles, and paper clips with it, and shoot nails through the
center along the axis of the coil when the DC is switched on.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Will the current in a light bulb connected to a 200-v source be greater or less than when the same bulb is connected to a 110-v circuit?
It will be greater:current = voltage / resistanceSince the bulb's resistance doesn't change, then current is a direct function of voltage.
What is it called when you have an uninterrupted path from a power source to a light bulb?
Direct current (DC).
Why there is no current in a light bulb unless it is connected across a source of applied voltage?
because i dont know
What happens to the charge on the conductive sphere when it is connected to a source of charge?
The charge on the conductive sphere spreads out uniformly over the surface of the sphere.
A 75 ohm light and a 150 ohm heater are connected in parallel to a 150 volt power source. What is the current through the 75 ohm lamp?
2 amps
What happens to the current of R1 connected in series with R2 when it is also connected in parallel with R3?
The current, if connected to a voltage source that can supply the needed current to (R1+R2) R3, will be unchanged. If the source cannot supply the needed current, the terminal voltage will decrease, which will change the current flowing through R1 and R2.
What is the simplest source of direct current?
Simple source of direct current are Batteries.
What happens when a battery is connected to a alternating current source?
this action is very dangerous and should not be considered.
How do you identify dc source is connected instead of battery?
"dc" is direct current which is what batteries use, whereas "ac" is alternating current, which is what your household receptacle uses.
How are batteries a source of direct current?
Batteries are a source of direct current because they product power (voltage and current) in only one direction.
Why resistors are connected in series with the voltage source and in parallel with current source?
a voltage source has very less(negligible)resistance.thus is considered as a short.if connected in parallel to a resistor will draw all the current acting as a short.thus is always connected in series of a resistor.where as a current source has tremendous resistance(infinity).thus if connected in series will be conidered as an open branch and no current will flow through it other than the source current.
Does a battery deliver a direct or alternating current?
A battery delivers a source of direct current.
Will the current in a light bulb connected to a 200-v source be greater or less than when the same bulb is connected to a 110-v circuit?
It will be greater:current = voltage / resistanceSince the bulb's resistance doesn't change, then current is a direct function of voltage.
What is load current?
It is a the current drawn by the application that is connected to the power source
If one of three lamps blows out when connected in parallel what happens to the current in the other two?
If three lamps are connected in parallel and one blows out, the current in the other two does not change. This assumes that the net change in total current does not cause the power source to change voltage.
Why is the current source connected in series only?
Current sources should not be connected in series. It's okay to connect them in parallel.
How does an ac power source differ from a dc power source?
AC power sources are the adapter power sources. DC power sources are the direct power sources. DC stands for direct current, meaning it is a direct source of energy., and AC stands for alternating current, which means it is a secondary source of power.
