How much current is in a circuit that includes a 9.0 volt battery and a bulb woth a resistance of 4.0 ohms
2 answers:
Answer:
Current in the circuit, I = 2.25 A
Explanation:
Given that,
Voltage of the battery, V = 9 V
Resistance of the bulb, R = 4 ohms
We need to find the current in the circuit. It can be calculated using Ohm's law. Ohm's law gives the relationship between the current, resistance and the voltage as :
I = 2.25 A
So, the current flowing in the circuit is 2.25 amperes. Hence, this is the required solution.
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Answer:
The resultant velocity of the plane relative to the ground is;
150 kh/h north
Explanation:
The flight speed of the plane = 210 km/h
The direction of flight of the plane = North
The speed at which the wind is blowing = 60 km/h
The direction of the wind = South
Therefore, representing the speed of the plane and the wind in vector format, we have;
The velocity vector of the plane = 210.
The velocity vector of the wind = -60.
Where, North is taken as the positive y or direction
The resultant velocity vector is found by summation of the two vectors as follows;
Resultant velocity vector = The velocity vector of the plane + The velocity vector of the wind
Resultant velocity vector = 210. + (-60.
) = 210.
- 60.
= 150.
The resultant velocity vector = 150.
Therefore, the resultant velocity of the plane relative to the ground = 150 kh/h north.