1)Several resistors are connected in parallel. If a battery provides constant voltage in this circuit the addition of another resistor in parallel
a)increases current through each resistor
b)decreases current through each resistor
c)doesn't affect the current through any resistor
d)doesn't affect the current through some resistors
Isn't the correct answer a)?
2)Several resistors are connected in parallel. If a battery provides constant voltage in this circuit the addition of another resistor in parallel
a)increases voltage across each resistor
b)decreases voltage across each resistor
c)doesn't affect the voltage across any resistor
d)doesn't affect the voltage across some resistors
shouldn't c) be the answer because voltage is the same throughout resistors that are placed in parallel?
c, and c.
1) When resistors are connected in parallel, the total current flowing through the circuit increases. This is because the total resistance decreases when resistors are added in parallel. So, the correct answer is actually (a) - the addition of another resistor in parallel increases the current through each resistor.
To understand why, you can use Ohm's Law. Ohm's Law states that current (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by the resistance (R) of the resistor. In a parallel circuit, the voltage is the same across all resistors, and by adding another resistor in parallel, the total resistance decreases. According to Ohm's Law, when the resistance decreases, the current increases.
2) You're correct! When resistors are connected in parallel, the voltage across each resistor is the same. So, the correct answer is (c) - the addition of another resistor in parallel doesn't affect the voltage across any resistor.
Parallel resistors have the same voltage across them because they are connected to the same two points in the circuit, creating a common voltage drop. Regardless of how many resistors are connected in parallel, the voltage across each resistor remains the same.