A 0.18m long metal rod is places on some metal rollers in a megnetic

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To calculate the voltage across the resistor in the given scenario, the formula V = IR can be used, where I is the current (0.034 A) and R is the resistance (25 Ω), resulting in a voltage of 0.85 V. To find the magnetic field strength (B), the formula F = BIL can be applied, where F is the force acting on the rod. The weight force can be used to find the force, which is 9.8 N. It's recommended to post such questions in the homework subforum for more targeted assistance.
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A 0.18m long metal rod is places on some metal rollers in a megnetic field directed into the page. When the rod is moved left with a speed of 1.6ms-1, a current of 0.034 A is measured through the 25Ω resistor.
How would I calculate the voltage when I'm not given the magnetic field strength? V=BvL
 
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help please!
 
To find B can I use F=BIL?? and for force I use 9.8(weight force)
 
Welcome to PF!

This appears to be a homework or homework-type question and should be posted in the homework subforum. Doing so will ensure you get the appropriate help from our outstanding staff of homework helpers. (instead of wikipedia surfing armchair scientists like myself)

Thanks!
 
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